MBOSE Class 12 Question Paper 2020 for Computer Technique Paper V

Total No. of Printed Pages—8
HS/XII/V/CT/Paper–V/20

2020

COMPUTER TECHNIQUE
( Vocational Stream )

( Computer Network )

( Theory )

Full Marks : 100

Time : 3 hours

The figures in the margin indicate full marks for the questions

General Instructions :

(i) Write all the answers in the Answer Script.
(ii) Attempt Part—A (Objective Questions) serially.
(iii) Attempt all parts of a question together at one place.

( PART : A—OBJECTIVE )
( Marks : 50 )

1. Fill in the blanks with appropriate words/phrases given
at the end : 1×20=20
(a) Two or more machines (computer) connected and
shared their resources is commonly known as _____.

(b) A broadcast address enables a message to go to
several groups of _____.

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(c) To connect two similar LAN’s, we use the device
called a(n) _____.

(d) A computer network that directly connects computer
separated by long distance is called a(n) _____.

(e) In a star topology, the central computer that has
everything routed through it is called a(n) _____
computer.

(f) Ethernet uses _____ topology.

(g) Baud is a unit of _____ transmission speed.

(h) A set of standards for communication is called
a(n) _____.

(i) A modem is a device that _____ computer output into
a form that can be accepted for transmission over
many existing telephone lines.

(j) One of the hardware components needed to create a
LAN is called a(n) _____: this can be either a twisted-
pair cable or a fibre-optic cable.

(k) The pieces of information that are sent over the
Internet are called _____.

(l) The operating system most commonly associated
with the Internet is _____.

(m) Each computer connected to the Internet is known
as a(n) _____.

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(n) The network of networks that connects computers
all around the world is called the _____.

(o) An IP address is a _____ bit number.

(p) Using the Internet to send a written message to
another Internet user is called _____.

(q) The World Wide Web document that a business can
use to communicate with its customers is also called
a(n) _____.

(r) In _____ communication, data can be transferred
simultaneously in both directions.

(s) Narrowband transmission channel offers _____
transmission speeds than broadband channels.

(t) Multiplexers and remote _____ may perform the
same function.

List of phrases/words :

network cable hub full-duplex protocol
converts bus workstation node
entry WAN measuring slower
bridge network host MAN
UNIX web site Windows 15
Internet packets switch e-mail
router 16 LAN faster

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2. State whether the following statements are True or
False : 1×10=10
(a) Domain names are easy to remember than IP
addresses.

(b) When loading TCP/IP on a workstation, we are
actually locating to the IP protocol suite.

(c) TCP/IP is one protocol.

(d) SPX is a connection-oriented protocol.

(e) Geographic domains are usually of .edu pattern.

(f) For class A addresses the first byte of the address
represents the networks and the last three bytes
represent the host.

(g) A dial-up connection is more reliable than a direct
connection.

(h) Firewall prevents the network from intruders.

(i) A fibre-optic cable may transmit pulses of laser light
in all digital networks.

(j) Router is usually used in MAN.

3. Choose and write the correct option : 1×5=5

(a) Computer network is
(i) the collection of hardware components and
computers
(ii) interconnected by communication channels
(iii) sharing of resources and information
(iv) All of the above

HS/XII/V/CT/Paper–V/20/51 [ Contd.

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(b) A data highway is a good description of which
‘network topology’?
(i) A bus
(ii) A star
(iii) A ring
(iv) A token ring

(c) Which of the following ISO levels is more closely
related to the physical communication facilities?
(i) Application
(ii) Session
(iii) Network
(iv) Data link

(d) Which kind of network should we create when we
need to link together the various branch offices
around the State for our company?
(i) LAN
(ii) WAN
(iii) MAN
(iv) CAN

(e) Which of the following is not a commonly used
network architecture?
(i) Ring
(ii) Star
(iii) Candle
(iv) Multi-drop

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4. Write short notes on the following in not more than
4 to 5 sentences each (any five ) : 3×5=15
(a) TCP/IP
(b) MODEM
(c) Switch
(d) Hackers
(e) Node
(f) Front-end
(g) Router
(h) Browser

( PART : B—DESCRIPTIVE )
( Marks : 50 )
Answer any two questions from each section

SECTION—I
( Network Technologies )

5. (a) Differentiate between simplex, half-duplex and full-
duplex modes of data transmission. 6

(b) What is a ‘ value-added network’ ? Explain. 3

6. (a) Describe the contents of a typical synchronous data
transmission frame. How are these frames used to
transmit data? 6

(b) What are the different types of network? Explain. 3

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7. (a) What is a ‘switch’? Why is it used in a network?
Explain. 5

(b) What is a ‘file server’? Explain its functions. 4

8. (a) Write a short note on ‘digital transmission’. 5

(b) Explain about multiplexing by the common carriers. 4

SECTION—II
( Network Environment )

9. (a) What is a firewall? Explain its advantages in a
network. 5

(b) What is a multi-user operating system? Explain
with example. 4

10. (a) What are communication protocols? Why are
communication protocols required in creating
network? 5

(b) What is booting? What are the types of booting?
Explain. 4

11. (a) Write a short note on ‘remote access service’. 5

(b) What are cookies? What are its types? Explain. 4

12. (a) What is serial data transmission? What is parallel
data transmission? Explain. 5

(b) Write a short note on V-SAT. 4

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SECTION—III
( Network Application )

13. (a) What is a facsimile? Explain. 3

(b) Write short notes on the following : 2+2=4
(i) Gopher
(ii) Archie

14. (a) Write a short note on the ‘Intranet’. 3

(b) What is a ‘Mosaic’? Explain. 4

15. What are the technologies introduced by the develop-
ment of ‘World Wide Web’? Explain. 7

16. (a) What is a TELNET? Explain in brief. 4

(b) What is an Internet Explorer in Windows? Explain. 3

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